In 1983, she played Princess Ariel Baaldorf in the medieval spoof Wizards and Warriors, which had a short run on the CBS television network.

Duffy joined the cast of the television series Newhart in its second season (she made an appearance in the 14th episode of the 1st season), playing the part of Dick Loudon's (played by Bob Newhart) self-infatuated preppy maid Stephanie Vanderkellen. It is probably her most popular role and one she played for seven seasons. She earned Emmy Award nominations for Outstanding Supporting Actress in a Comedy Series for the role every year from 1984 through 1990. She also received a Golden Globe nomination and won three Viewers For Quality Television Awards for her work. Julia was actually pregnant during several episodes of Newhart. To hide it, she wore baggy clothes and stood behind furniture.[2]

From 1993-95, Duffy played Barb Ballantine on the short-lived comedy series The Mommies. Duffy played Lindsay Mercer, one of the failed buyers of Winfred-Lauder and the ex-wife of "Lord Mercer" on The Drew Carey Show. She has a recurring role on the Nickelodeon series Drake & Josh as Linda Hayfer, a high school English teacher who despises Drake. She appeared on The Suite Life of Zack & Cody as the rich mother of Jason, a boy who goes on a date with Maddie Fitzpatrick (Ashley Tisdale).

She made a brief appearance in the Nickelodeon sitcom True Jackson, VP as the owner of a stage that LuLu wanted to rent, she also had an obsession with Elvis Presley saying that his spirit lived on in that building, but it was really rats.

Personal life[edit]

Duffy graduated from The American Academy of Dramatic Arts in New York in 1972. She has been married since 1984 to actor Jerry Lacy, co-star of Dark Shadows and Love of Life, and has 2 children, Kerry Kathleen and Daniel. They live in Los Angeles.